🔋 Baseline for HV Battery SoH Performance (Battery Degradation Data by Taycan Owners)

[Bognar67]

So according to chatgpt (i know), I never charge to 100%, I can't remember the last time I did, so its telling me to rebalance my battery. but its saying to let the car rest at 100% for a few hours, this seems contradictory?

Tip	Why it helps
? Occasionally charge to 100%	Enables the system to detect and equalize cell voltages properly.
? Let the car rest at 100% for a few hours (e.g., overnight while plugged in)	Balancing usually happens during idle time, not during charging itself.
? Don’t always stick to 80–85%	Staying too long at mid-range SoC can prevent balancing from ever being triggered.
? Check cell voltages (via OBDeleven or other tools)	Useful if you’re tracking battery health or think you might have an imbalance

Since you correctly don't charge to 100%, your BMS do not know exactly where is the real 100%. Balancing makes it closer. That is why your reported SoH will be better after the balancing procedure.
Doing it couple of times a year will not harm your battery significantly but will offer you more correct soH %.

 

[SergeyIndy]

1) unknown
2) 85.1%
3) 30k miles
4) only charge at home
5) 2020 turbo s

is this bad or reasonable degradation?

I think this is reasonable degradation for the age and miles. I think you can gain at least 2% after a rebalance.

 

[Chalper]

1) unknown
2) 90.805%
3) 27K miles
4) Charge at home on Level 2
5) 2021 4S

 

[fika]

1) no idea
2) 87.63%
3) 57k
4) Charge at home but I use DC on trips, and previous owner (2020-2023) may have DC charged more?
5) 2020 Turbo

 

[ron_b]

I just checked my state of health today after a short trip and my battery was at 59% state of charge after a long trip yesterday and two DCFC sessions yesterday. Great news…


1) Delivery Soh - unknown
2) Current SoH 89.54 as reported by Car Scanner Pro
3) Current mileage 99,331 mi 145,460 km
4) kWh DC charging 20,866kWh L2 12,891
5) Build date Aug 2020
1/3 of a penny/mile seems efficient, until you factor in the 4 sets of tires.
But what I am truly pleased with is 10.46% drop in SoH with over 90k miles.

I just checked my state of health this morning after restoring my SoC from 22 to 85% in the garage 48A hard wired ChargePoint Home Flex. Car still DCFC at 260+kW when preconditioned. Great news…


1) Delivery Soh - unknown
2) Current SoH 86.36 as reported by Car Scanner Pro
3) Current mileage 100,990 mi 162,625 km
4) kWh DC charging 22,202kWh L2 15,762
5) Build date Aug 2020
<$0.01/mile seems efficient, until you factor in the 5 sets of tires.
But what I am truly pleased with is 13.6% drop in SoH with over 100k miles with significant DCFC.

 

[Scandinavian]

That is quite an impressive health in your car @ron_b . Your Taycan must be one of the most used one as well. Great to hear.

 

[hifi239]

1) Unknown SOH when new
2) 89.54%
3) 21,600 mi
4) Unknown DC charging kW - mostly AC at home
5) 10/2021

 

[ps500]

1) Unknown
2) 93.1%
3) 27,399 miles
4) mainly DC > 100KW
5) 2022 turbo S

 

[ps500]

Not sure why, but my SOH appears to be improving with age and mileage

 

[tchavei]

Km: 48000
SoH: 89.66%

That's all.

 

[violuma]

Current mileage: 10122
SoH: 92.2%
No DC charging since last report
Has been charged to 95% once since last report, other than that nothing above 85%
Has not been below 25% since last report
Voltage in all individual cells appears consistent

 

[davidh]

1. 99.82% @30 miles
2.89.15%
3. 15148 miles
4. 95% level 2 charging
5. DOB April 2023, Turbo CT. Lat 52N

 

[Nikolaj_h]

Hi,

Great initiative

Taycan RWD Performance+

Date (dd-mm-yyyy)	Kilometer	SOH	Note
01-12-2022	0	??
16-04-2024	47443	90.93%
15-12-2024	68000	89.15%
10-02-2025	72852	90.55%	After calibration

General:
Factory SOH unknown
Use Fast DC charging 4-8 times per year
Location: Denmark

 

[tchavei]

Another update

Km: 50000
SoH: 89.76%

Cheers

 

[rs38]

update for my car
12/2020, 4.5 years old
46000km
SoH: 89.8%

btw:
recently dicovered Carscanner App has some nice Apple CarPlay Dashboards, only button function missing for resetting buggy ECUs